chemistry chapter 2

Question 1

3 states of matter

Answer 1

Solid,liquid,gas

Question 2

how can physical changes be classified

Answer 2

reversible or irreversible

Question 3

How can mixtures be classified

Answer 3

Homogenous or heterogenous

Question 4

how can mixtures be seperated

Answer 4

physical changes

Question 5

how are elements and compounds different

Answer 5

Compound is made of elemtents

Question 6

how can substances and mixtures be distinguished

Answer 6

mixture is a combonation of substances

Question 7

what always happens during a chemical change

Answer 7

new substance is created

Question 8

what are the 4 possible clues chemical changs has occured

Answer 8

Color change, absorb/release energy, gas, precipitate

Question 9

mass

Answer 9

amount of matter in an object

Question 10

volume

Answer 10

amount of space an object takes up

Question 11

extensive property

Answer 11

depends on amount of matter in an object

Question 12

intensive property

Answer 12

does not depend on the amount of matter in a sample. Type/identity

Question 13

substance

Answer 13

matter with a uniform and definite composition

Question 14

physical propertie

Answer 14

quality of a substance observed without changing the substances compostion.
ex: color,mass,melting point, volume

Question 15

physical change

Answer 15

compostion of the material does not change

Question 16

mixture

Answer 16

a physical combination of multiple substances that retain their individual identities.

Question 17

heterogenous mixture

Answer 17

non-uniform composition

Ex: chicken noodle soup, granite, milk

Question 18

homogonous mixture

Answer 18

uniform composition throughout

Ex: lemonade, black coffee, steel

Question 19

solution

Answer 19

Another name for homogonous mixture

Question 20

phase

Answer 20

a physically distinctive form of matter

Question 21

filtration

Answer 21

separate solid form liquid based on differences in state/phase

Question 22

distillation

Answer 22

separate liquids based on boiling points

Question 23

element

Answer 23

simplest form of matter that has a unique set of properties

Question 24

compound

Answer 24

chemical combonation of 2 or more elements

Question 25

chemical change

Answer 25

produces substances with different composition

Question 26

chemical property

Answer 26

describes the ability of a substance to undergo chemical change

Question 27

chemical reaction

Answer 27

occures whenever one or more substances changes into one or more new substances